Scene Modeling of Virtual Operation Training System for Tower Cranes

2011 ◽  
Vol 121-126 ◽  
pp. 4671-4674
Author(s):  
Ming Xiao Dong ◽  
Rui Chuan Li ◽  
Qin Zu Xu ◽  
Cui Lan Zhu
Keyword(s):  
Training System ◽  
Optimization Techniques ◽  
Scene Modeling ◽  
Building Site ◽  
Virtual Scene ◽  
Tower Crane ◽  
Time Interaction ◽  
Virtual Operation ◽  
Modeling Techniques ◽  
Set Up

The functions and structure of a virtual operation training system for tower cranes was described, and virtual scene modeling techniques of the system was investigated in this paper. The virtual scene model of building site and environment around a tower crane were set up based on Creator softward. Model optimization techniques were used to reduce the number of model surfaces and model nodes, which saved system resources and improved system running speed. Model driver was realized in VC++ by calling Vega functions, which achieved the performance of real-time interaction between trainers and the scene. The techniques provide the foundation for developing the virtual real software of virtual operating system for training operators.

Formation and Development of the Pre-Professional Training System of Foreign Medical Applicants in Ukraine (Historical and Educational Aspect)

2014 ◽  
Vol 4 (3) ◽  
pp. 95-98
Author(s):  
Iana Proskurkina
Keyword(s):  
Foreign Students ◽  
Professional Training ◽  
Training System ◽  
Further Education ◽  
Effective System ◽  
History Of ◽  
Set Up ◽  
The University ◽  
History Of Formation ◽  
Educational Aspect

Abstract The growing number of foreign applicants looking forward to getting education in Ukrainian medical universities makes us find the ways how to improve and make effective the pre-professional training system of foreign medical applicants for further education. The article deals with the issues of the history of formation and development of the preprofessional training system of foreign medical applicants in Ukraine. On the ground of the electronic databases of the official websites of higher educational establishments, the data on years of opening first offices of the dean, departments and preparatory faculties for foreign medical applicants in Ukrainian medical universities are analyzed and systematized. Also the data on the setting up preparatory faculties at other universities who carry out licensed training of foreign students of the medical profile are presented. The data on the operating and management of such institutions in the system of the University administration are generalized. It’s revealed that during the years of its functioning the pre-professional training has changed, in particular the system was commercialized and the institutions involved in training foreign applicants have been reorganized. The modern trends in teaching foreign medical students at the preparatory faculties of the Ukrainian medical universities are displayed. Based on the analysis of the data it is concluded that the system of the pre-professional training of foreign medical applicants was set up in the 50s-60s years of the twentieth century. During this time, some positive experience in the preparation of future international medical specialists has been gained. The system of the pre-professional training of foreign medical applicants has been comprehensively improved and an effective system of managing foreign medical applicants has been created.

Scene Modeling and Driving of a Visual Simulation System

2012 ◽  
Vol 566 ◽  
pp. 628-632
Author(s):  
Ming Xiao Dong ◽  
Li Juan Sun ◽  
Cui Lan Zhu ◽  
Ming Tao Su ◽  
Jun Ru Tian ◽  
...  
Keyword(s):  
Simulation System ◽  
Optimization Techniques ◽  
Visual Simulation ◽  
Model Optimization ◽  
Scene Modeling ◽  
Levels Of Detail ◽  
Modeling Process ◽  
External Reference ◽  
The Face ◽  
Multigen Creator

This paper designed the design scheme of a visual simulation system for tower cranes, and described the methods of modeling scene and manufacturing texture according to the characteristics of Multigen Creator software and Vega virtual software. The five model optimization techniques including levels of detail technique, instancing technique, removing redundant faces, billboard technique and external reference were discussed in the modeling process. In order to improve system running speed, the methods of reducing the face number of the models and save memory spaces were investigated. Scene driving was realized in programming environment of VC++ software. Finally the scene modeling and driving of visual simulation system for tower cranes were completed.

The Development of Interactive Marine Incinerator Operational Training System Based on Web3D

2014 ◽  
Vol 989-994 ◽  
pp. 4277-4280
Author(s):  
Wen Long Yao
Keyword(s):  
Real Time ◽  
Training System ◽  
System Structure ◽  
Equipment Management ◽  
Time Interaction ◽  
Engine Room ◽  
Training Mode ◽  
New Type ◽  
Marine Engineering ◽  
Engineering Training

In this paper, the design scheme, technical route and system structure of the interactive marine incinerator operation training system based on Web3D are proposed based on the study of the marine engine room simulator project. The virtual reality technique, visual C# and IE real-time interaction technology are introduced to the marine incinerator operation training system and the development thoughts of the interactive marine incinerator operation training system based on Web3D are elaborated based on the 3D modeling optimization and real-time interaction technology. This study is a new type of marine engineering training mode, it can better meet the STCW convention in Manila amendments on incinerator equipment management requirements.

Modeling and Optimization of Gas Metal Arc Welding (GMAW) Process

2012 ◽  
pp. 339-367
Author(s):  
R. Venkata Rao
Keyword(s):  
Process Parameters ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Optimization Methods ◽  
Optimization Techniques ◽  
Modeling And Optimization ◽  
Metal Arc Welding ◽  
Process Output ◽  
Set Up

Weld quality is greatly affected by the operating process parameters in the gas metal arc welding (GMAW) process. The quality of the welded material can be evaluated by many characteristics, such as bead geometric parameters, deposition efficiency, weld strength, weld distortion, et cetera. These characteristics are controlled by a number of welding process parameters, and it is important to set up proper process parameters to attain good quality. Various optimization methods can be applied to define the desired process output parameters through developing mathematical models to specify the relationship between the input parameters and output parameters. The method capable of accurate prediction of welding process output parameters would be valuable for rapid development of welding procedures and for developing control algorithms in automated welding applications. This chapter presents the details of various techniques used for modeling and optimization of GMAW process parameters. The optimization methods covered in this chapter are appropriate for modeling and optimizing the GMAW process. It is found that there is high level of interest in the adaptation of RSM and ANN techniques to predict responses and to optimize the GMAW process. Combining two optimization techniques, such as GA and RSM, would reveal good results for finding out the optimal welding conditions. Furthermore, efforts are required to apply advanced optimization techniques to find out the optimal parameters for GMAW process at which the process could be considered safe and more economical.

scholarly journals Initial Analysis, Planning and Calculation of Vertical Delivery in High-rise Building Construction

2017 ◽  
Vol 48 (2) ◽  
pp. 87-92 ◽  
Author(s):  
Simo Suđić
Keyword(s):  
Construction Projects ◽  
Critical Path ◽  
Vital Role ◽  
Optimal Number ◽  
Building Site ◽  
Tower Crane ◽  
Concrete Production ◽  
General Contractors ◽  
Time Calculation ◽  
Major Factors

Tower crane plays a vital role in materials delivery in construction projects. General contractors often use technical and commercial quotes to calculate number of cranes and their engagement duration in project, and they often have to deal with commercial and time risks. The main reason for this approach is the lack of standardised methodologies for calculating tower cranes engagement. Identifying the optimal number of cranes, their location and duration of engagement at the building site are the major factors that can reduce the risks considering the time and cost by increasing productivity and thus decreasing the required time. Calculation will be based on different production parameters -space per worker, concrete production per crane or worker, lifting time. This paper presents a methodology for calculating the required number of cranes and their optimal positioning. Proposed model for crane engagement optimisation is developed using the Critical Path Method in Primavera P6 software.

scholarly journals Set Up and Testing of a Software Package for the Geodetic Analysis of VLBI Data +

1984 ◽  
Vol 110 ◽  
pp. 375-376
Author(s):  
A. Caporali ◽  
G. Sylos Labini
Keyword(s):  
Ad Hoc ◽  
Computational Effort ◽  
Input Output ◽  
Batch Mode ◽  
Time Interaction ◽  
Intrinsic Complexity ◽  
Vlbi Data ◽  
Set Up ◽  
The Moment ◽  
Graphic Program

The need for centimetric accuracies set by the application of the VLBI technique to geodesy implies a considerable computational effort, because of the intrinsic complexity of the model and because there is an increasingly large number of calibrations and corrections which can be accounted for only via software. The program VLBI 3 (Robertson, 1975) has been developed for the geodetic and astrometric analysis of VLBI data. It includes an accurate theoretical model of the observables and is supported by a number of routines for parameter fitting and input/output operations with data and results. The original VAX version of VLBI 3, due to N. Bartel and M.I. Ratner, runs in batch mode and requires routines which are in general unavailable in standard VAX systems. We have prepared (Caporali and Sylos Labini, 1982) a modified VAX version of VLBI 3. This version runs on our standard VAX/VMS computers and contains a number of changes in the FORTRAN source which allow to the user a real time interaction with the program. In addition, having a Tektronix graphic station at our disposal, we decided to replace the existing plot package - which used the line printer - with a “ad hoc” graphic program which permits interactive display of the results of each run of VLBI 3. Our work was mostly concerned with the input/output sections of VLBI 3. The theorical model of the VLBI observables has, for the moment, been left unchanged. We have, however, noticed that the theorical model could be updated and made more precise, e.g. in the computation of the nutation terms and of the aberration. This updating and a more extensive geodetic and astrometric analysis of VLBI data are planned to be done next.

Microsurgery simulation training system and set up: An essential system to complement every training programme

2017 ◽  
Vol 70 (7) ◽  
pp. 893-900 ◽  
Author(s):  
Dhalia Masud ◽  
Nadine Haram ◽  
Margarita Moustaki ◽  
Whitney Chow ◽  
Samer Saour ◽  
...  
Keyword(s):  
Simulation Training ◽  
Training Programme ◽  
Training System ◽  
Set Up

scholarly journals Data-Efficient Design Exploration through Surrogate-Assisted Illumination

2018 ◽  
Vol 26 (3) ◽  
pp. 381-410 ◽  
Author(s):  
Adam Gaier ◽  
Alexander Asteroth ◽  
Jean-Baptiste Mouret
Keyword(s):  
Three Dimensional ◽  
Flow Simulation ◽  
Optimal Solution ◽  
Optimization Techniques ◽  
Efficient Design ◽  
Design Exploration ◽  
High Performing ◽  
Airfoil Optimization ◽  
Modeling Techniques ◽  
Illumination Algorithms

Design optimization techniques are often used at the beginning of the design process to explore the space of possible designs. In these domains illumination algorithms, such as MAP-Elites, are promising alternatives to classic optimization algorithms because they produce diverse, high-quality solutions in a single run, instead of only a single near-optimal solution. Unfortunately, these algorithms currently require a large number of function evaluations, limiting their applicability. In this article, we introduce a new illumination algorithm, Surrogate-Assisted Illumination (SAIL), that leverages surrogate modeling techniques to create a map of the design space according to user-defined features while minimizing the number of fitness evaluations. On a two-dimensional airfoil optimization problem, SAIL produces hundreds of diverse but high-performing designs with several orders of magnitude fewer evaluations than MAP-Elites or CMA-ES. We demonstrate that SAIL is also capable of producing maps of high-performing designs in realistic three-dimensional aerodynamic tasks with an accurate flow simulation. Data-efficient design exploration with SAIL can help designers understand what is possible, beyond what is optimal, by considering more than pure objective-based optimization.

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